Each of the Following Statements States a Weakness with the Evaluation

Multiple Choice

Each of the following statements states a weakness with the evaluation techniques presented in the text;which of the statements is NOT true?

A) Posttest only - there could be a number of other competing causes for any change.
B) Pretest/posttest - it is difficult to determine the impact of training on any changes that occur.
C) Posttest only with control group - results may not generalize to other groups
D) Pretest/posttest with control group - threats to external validity are still a concern.
E) All of the above are true.